Why can't I get into Case Central from the onProducts?

When I click Case Central from the App I am unable to login. How can I get to Case Central?

Article
Number:99852

Products:

Core

The Case Central link is based off of the Email that is listed in the App and Zendesk (our ticketing system).In order for you to get to Case Central and be able to create the Ticket, the Email Address in the App and Zendesk need to match.Please contact Support to ensure they indeed match.